The invasive mango fruit borer, Citripestis eutraphera (Meyrick) (Lepidoptera: Pyralidae, Phycitinae), is reported for the first time as a seedling borer of cashew. Infestation on the seedlings probably indicates opportunistic use of vegetative portions as fruits are seasonal and unavailable during most of the year. Infestation was also observed on the fruits of mango and cashew in the State of Kerala for the first time.